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24 lines
824 B
Dart
24 lines
824 B
Dart
import 'components/card.dart';
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abstract class Pile {
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/// Returns true if the [card] can be taken away from this pile and moved
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/// somewhere else.
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bool canMoveCard(Card card);
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/// Returns true if the [card] can be placed on top of this pile. The [card]
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/// may have other cards "attached" to it.
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bool canAcceptCard(Card card);
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/// Removes [card] from this pile; this method will only be called for a card
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/// that both belong to this pile, and for which [canMoveCard] returns true.
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void removeCard(Card card);
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/// Places a single [card] on top of this pile. This method will only be
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/// called for a card for which [canAcceptCard] returns true.
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void acquireCard(Card card);
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/// Returns the [card] (which already belongs to this pile) in its proper
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/// place.
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void returnCard(Card card);
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}
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